1 Updating Information for FreeBSD current users
3 This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>.
4 See end of file for further details. For commonly done items, please see the
5 COMMON ITEMS: section later in the file. These instructions assume that you
6 basically know what you are doing. If not, then please consult the FreeBSD
9 Items affecting the ports and packages system can be found in
10 /usr/ports/UPDATING. Please read that file before running portupgrade.
12 20140909: p18 FreeBSD-SA-14:18.openssl
13 Fix OpenSSL multiple vulnerabilities. [SA-14:18]
15 20140708: p17 FreeBSD-SA-14:17.kmem
16 Fix kernel memory disclosure in control messages and SCTP
17 notifications. [SA-14:17]
19 20140624: p16 FreeBSD-SA-14:16.file
20 FreeBSD-EN-14:08.heimdal
22 Fix multiple vulnerabilities in file(1) and libmagic(3).
25 Fix gss_pseudo_random interoperability issue. [EN-14:08]
27 20140605: p15 FreeBSD-SA-14:14.openssl
28 Fix OpenSSL multiple vulnerabilities. [SA-14:14]
30 20140603: p14 FreeBSD-SA-14:11.sendmail
31 FreeBSD-SA-14:12.ktrace
35 Fix sendmail improper close-on-exec flag handling. [SA-14:11]
37 Fix ktrace memory disclosure. [SA-14:12]
39 Fix incorrect error handling in PAM policy parser. [SA-14:13]
41 Fix triple-fault when executing from a threaded process.
44 20140513: p13 FreeBSD-EN-14:03.pkg
45 FreeBSD-EN-14:04.kldxref
48 Add pkg bootstrapping, configuration and public keys. [EN-14:03]
50 Improve build repeatability for kldxref(8). [EN-14:04]
52 Fix data corruption with ciss(4). [EN-14:05]
54 20140430: p12 FreeBSD-SA-14:08.tcp
56 Fix TCP reassembly vulnerability. [SA-14:08]
58 20140408: p11 FreeBSD-SA-14:05.nfsserver
59 FreeBSD-SA-14:06.openssl
60 Fix deadlock in the NFS server. [SA-14:05]
62 Fix for ECDSA Cache Side-channel Attack in OpenSSL. [SA-14:06]
64 20140114: p10 FreeBSD-SA-14:01.bsnmpd
67 FreeBSD-EN-14:01.random
69 Fix bsnmpd remote denial of service vulnerability. [SA-14:01]
71 Fix ntpd distributed reflection Denial of Service
72 vulnerability. [SA-14:02]
74 Fix BIND remote denial of service vulnerability. [SA-14:04]
76 Disable hardware RNGs by default. [EN-14:01]
78 Fix incorrect coalescing of stack entry with mmap. [EN-14:02]
80 20131128: p9 FreeBSD-EN-13:05.freebsd-update
81 Fix error in patch for FreeBSD-EN-13:04.freebsd-update.
83 20131026: p8 FreeBSD-EN-13:04.freebsd-update
84 Fix multiple freebsd-update bugs that break upgrading to
87 20130910: p7 FreeBSD-SA-13:12.ifioctl
88 FreeBSD-SA-13:13.nullfs
90 In IPv6 and NetATM, stop SIOCSIFADDR, SIOCSIFBRDADDR,
91 SIOCSIFDSTADDR and SIOCSIFNETMASK at the socket layer rather
92 than pass them on to the link layer without validation or
93 credential checks. [SA-13:12]
95 Prevent cross-mount hardlinks between different nullfs mounts
96 of the same underlying filesystem. [SA-13:13]
98 20130822: p6 FreeBSD-SA-13:09.ip_multicast
101 Fix an integer overflow in computing the size of a temporary buffer
102 can result in a buffer which is too small for the requested
105 Fix a bug that could lead to kernel memory disclosure with
106 SCTP state cookie. [13:10]
108 Fix a data corruption problem with mfi(4) operating on > 2TB
109 disks in a JBOD. [EN-13:03]
111 20130726: p5 FreeBSD-SA-13:07.bind FreeBSD-SA-13:08.nfsserver
112 Fix Denial of Service vulnerability in named(8). [13:07]
114 Fix a bug that allows remote client bypass the normal
115 access checks when when -network or -host restrictions are
116 used at the same time with -mapall. [13:08]
118 20130618: p4 FreeBSD-SA-13:06.mmap
119 Fix a bug that allowed a tracing process (e.g. gdb) to write
120 to a memory-mapped file in the traced process's address space
121 even if neither the traced process nor the tracing process had
122 write access to that file.
124 20130429: p3 FreeBSD-SA-13:05.nfsserver
125 Fix a bug that allows NFS clients to issue READDIR on files.
127 20130402: p2 FreeBSD-SA-13:03.openssl FreeBSD-SA-13:04.bind
128 Fix multiple vulnerabilities in OpenSSL.
130 Fix Denial of Service vulnerability in named(8).
132 20130218: p1 FreeBSD-SA-13:01.bind FreeBSD-SA-13:02.libc
133 Fix Denial of Service vulnerability in named(8) with DNS64.
135 Fix Denial of Service vulnerability in libc's glob(3) functionality.
141 The sparc64 ZFS loader has been changed to no longer try to auto-
142 detect ZFS providers based on diskN aliases but now requires these
143 to be explicitly listed in the OFW boot-device environment variable.
146 Now unix domain sockets behave "as expected" on nullfs(5). Previously
147 nullfs(5) did not pass through all behaviours to the underlying layer,
148 as a result if we bound to a socket on the lower layer we could connect
149 only to the lower path; if we bound to the upper layer we could connect
150 only to the upper path. The new behavior is one can connect to both the
151 lower and the upper paths regardless what layer path one binds to.
154 The acpi_wmi(4) status device /dev/wmistat has been renamed to
158 A new VOP_ADVISE() was added to support posix_fadvise(2). All
159 filesystem modules must be recompiled.
162 The interface of the VOP_VPTOCNP(9) changed, now the returned
163 vnode shall be referenced, previously it was required to be
164 only held. All in-tree filesystems are converted.
170 The broken amd(4) driver has been replaced with esp(4) in the amd64,
171 i386 and pc98 GENERIC kernel configuration files.
174 This commit modifies vfs_register() so that it uses a hash
175 calculation to set vfc_typenum, which is enabled by default.
176 The first time a system is booted after this change, the
177 vfc_typenum values will change for all file systems. The
178 main effect of this is a change to the NFS server file handles
179 for file systems that use vfc_typenum in their fsid, such as ZFS.
180 It will, however, prevent vfc_typenum from changing when file
181 systems are loaded in a different order for subsequent reboots.
182 To disable this, you can set vfs.typenumhash=0 in /boot/loader.conf
183 until you are ready to remount all NFS clients after a reboot.
186 Bump the shared library version numbers for libraries that
187 do not use symbol versioning, have changed the ABI compared
188 to stable/8 and which shared library version was not bumped.
189 Done as part of 9.0-RELEASE cycle.
192 During the merge of Capsicum features, the fget(9) KPI was modified.
193 This may require the rebuilding of out-of-tree device drivers --
194 issues have been reported specifically with the nVidia device driver.
195 __FreeBSD_version is bumped to 900041.
197 Also, there is a period between 20110811 and 20110814 where the
198 special devices /dev/{stdin,stdout,stderr} did not work correctly.
199 Building world from a kernel during that window may not work.
202 The packet filter (pf) code has been updated to OpenBSD 4.5.
203 You need to update userland tools to be in sync with kernel.
204 This update breaks backward compatibility with earlier pfsync(4)
205 versions. Care must be taken when updating redundant firewall setups.
208 The following sysctls and tunables are retired on x86 platforms:
210 machdep.hlt_logical_cpus
211 The following sysctl is retired:
212 machdep.hyperthreading_allowed
213 The sysctls were supposed to provide a way to dynamically offline and
214 online selected CPUs on x86 platforms, but the implementation has not
215 been reliable especially with SCHED_ULE scheduler.
216 machdep.hyperthreading_allowed tunable is still available to ignore
217 hyperthreading CPUs at OS level.
218 Individual CPUs can be disabled using hint.lapic.X.disabled tunable,
219 where X is an APIC ID of a CPU. Be advised, though, that disabling
220 CPUs in non-uniform fashion will result in non-uniform topology and
221 may lead to sub-optimal system performance with SCHED_ULE, which is
225 cpumask_t type is retired and cpuset_t is used in order to describe
229 Changes to ifconfig(8) for dynamic address family detection mandate
230 that you are running a kernel of 20110525 or later. Make sure to
231 follow the update procedure to boot a new kernel before installing
235 Support for sun4v architecture is officially dropped
238 Several KPI breaking changes have been committed to the mii(4) layer,
239 the PHY drivers and consequently some Ethernet drivers using mii(4).
240 This means that miibus.ko and the modules of the affected Ethernet
241 drivers need to be recompiled.
243 Note to kernel developers: Given that the OUI bit reversion problem
244 was fixed as part of these changes all mii(4) commits related to OUIs,
245 i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific
246 handling, no longer can be merged verbatim to stable/8 and previous
250 Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci'
251 into their kernel configurations along with 'device pci'.
254 The default NFS client is now the new NFS client, so fstype "newnfs"
255 is now "nfs" and the regular/old NFS client is now fstype "oldnfs".
256 Although mounts via fstype "nfs" will usually work without userland
257 changes, it is recommended that the mount(8) and mount_nfs(8)
258 commands be rebuilt from sources and that a link to mount_nfs called
259 mount_oldnfs be created. The new client is compiled into the
260 kernel with "options NFSCL" and this is needed for diskless root
261 file systems. The GENERIC kernel configs have been changed to use
262 NFSCL and NFSD (the new server) instead of NFSCLIENT and NFSSERVER.
263 To use the regular/old client, you can "mount -t oldnfs ...". For
264 a diskless root file system, you must also include a line like:
266 vfs.root.mountfrom="oldnfs:"
268 in the boot/loader.conf on the root fs on the NFS server to make
269 a diskless root fs use the old client.
272 The GENERIC kernels for all architectures now default to the new
273 CAM-based ATA stack. It means that all legacy ATA drivers were
274 removed and replaced by respective CAM drivers. If you are using
275 ATA device names in /etc/fstab or other places, make sure to update
276 them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY,
277 where 'Y's are the sequential numbers starting from zero for each type
278 in order of detection, unless configured otherwise with tunables,
279 see cam(4)). There will be symbolic links created in /dev/ to map
280 old adX devices to the respective adaY. They should provide basic
281 compatibility for file systems mounting in most cases, but they do
282 not support old user-level APIs and do not have respective providers
283 in GEOM. Consider using updated management tools with new device names.
285 It is possible to load devices ahci, ata, siis and mvs as modules,
286 but option ATA_CAM should remain in kernel configuration to make ata
287 module work as CAM driver supporting legacy ATA controllers. Device ata
288 still can be used in modular fashion (atacore + ...). Modules atadisk
289 and atapi* are not used and won't affect operation in ATA_CAM mode.
290 Note that to use CAM-based ATA kernel should include CAM devices
291 scbus, pass, da (or explicitly ada), cd and optionally others. All of
292 them are parts of the cam module.
294 ataraid(4) functionality is now supported by the RAID GEOM class.
295 To use it you can load geom_raid kernel module and use graid(8) tool
296 for management. Instead of /dev/arX device names, use /dev/raid/rX.
298 No kernel config options or code have been removed, so if a problem
299 arises, please report it and optionally revert to the old ATA stack.
300 In order to do it you can remove from the kernel config:
305 , and instead add back:
306 device atadisk # ATA disk drives
307 device ataraid # ATA RAID drives
308 device atapicd # ATAPI CDROM drives
309 device atapifd # ATAPI floppy drives
310 device atapist # ATAPI tape drives
313 The default NFS server has been changed to the new server, which
314 was referred to as the experimental server. If you need to switch
315 back to the old NFS server, you must now put the "-o" option on
316 both the mountd and nfsd commands. This can be done using the
317 mountd_flags and nfs_server_flags rc.conf variables until an
318 update to the rc scripts is committed, which is coming soon.
321 The GNU Objective-C runtime library (libobjc), and other Objective-C
322 related components have been removed from the base system. If you
323 require an Objective-C library, please use one of the available ports.
326 ath(4) has been split into bus- and device- modules. if_ath contains
327 the HAL, the TX rate control and the network device code. if_ath_pci
328 contains the PCI bus glue. For Atheros MIPS embedded systems, if_ath_ahb
329 contains the AHB glue. Users need to load both if_ath_pci and if_ath
330 in order to use ath on everything else.
332 TO REPEAT: if_ath_ahb is not needed for normal users. Normal users only
333 need to load if_ath and if_ath_pci for ath(4) operation.
336 As part of the replacement of sysinstall, the process of building
337 release media has changed significantly. For details, please re-read
338 release(7), which has been updated to reflect the new build process.
341 GNU binutils 2.17.50 (as of 2007-07-03) has been merged to -HEAD. This
342 is the last available version under GPLv2. It brings a number of new
343 features, such as support for newer x86 CPU's (with SSE-3, SSSE-3, SSE
344 4.1 and SSE 4.2), better support for powerpc64, a number of new
345 directives, and lots of other small improvements. See the ChangeLog
346 file in contrib/binutils for the full details.
349 IPsec's HMAC_SHA256-512 support has been fixed to be RFC4868
350 compliant, and will now use half of hash for authentication.
351 This will break interoperability with all stacks (including all
352 actual FreeBSD versions) who implement
353 draft-ietf-ipsec-ciph-sha-256-00 (they use 96 bits of hash for
355 The only workaround with such peers is to use another HMAC
356 algorithm for IPsec ("phase 2") authentication.
359 Remove the uio_yield prototype and symbol. This function has
360 been misnamed since it was introduced and should not be
361 globally exposed with this name. The equivalent functionality
362 is now available using kern_yield(curthread->td_user_pri).
363 The function remains undocumented.
366 A SYSCTL_[ADD_]UQUAD was added for unsigned uint64_t pointers,
367 symmetric with the existing SYSCTL_[ADD_]QUAD. Type checking
368 for scalar sysctls is defined but disabled. Code that needs
369 UQUAD to pass the type checking that must compile on older
370 systems where the define is not present can check against
371 __FreeBSD_version >= 900030.
373 The system dialog(1) has been replaced with a new version previously
374 in ports as devel/cdialog. dialog(1) is mostly command-line compatible
375 with the previous version, but the libdialog associated with it has
376 a largely incompatible API. As such, the original version of libdialog
377 will be kept temporarily as libodialog, until its base system consumers
378 are replaced or updated. Bump __FreeBSD_version to 900030.
381 If you are trying to run make universe on a -stable system, and you get
382 the following warning:
383 "Makefile", line 356: "Target architecture for i386/conf/GENERIC
384 unknown. config(8) likely too old."
385 or something similar to it, then you must upgrade your -stable system
386 to 8.2-Release or newer (really, any time after r210146 7/15/2010 in
387 stable/8) or build the config from the latest stable/8 branch and
388 install it on your system.
390 Prior to this date, building a current universe on 8-stable system from
391 between 7/15/2010 and 1/2/2011 would result in a weird shell parsing
392 error in the first kernel build phase. A new config on those old
393 systems will fix that problem for older versions of -current.
396 The TCP stack has been modified to allow Khelp modules to interact with
397 it via helper hook points and store per-connection data in the TCP
398 control block. Bump __FreeBSD_version to 900029. User space tools that
399 rely on the size of struct tcpcb in tcp_var.h (e.g. sockstat) need to
403 Generic IEEE 802.3 annex 31B full duplex flow control support has been
404 added to mii(4) and bge(4), bce(4), msk(4), nfe(4) and stge(4) along
405 with brgphy(4), e1000phy(4) as well as ip1000phy() have been converted
406 to take advantage of it instead of using custom implementations. This
407 means that these drivers now no longer unconditionally advertise
408 support for flow control but only do so if flow control is a selected
409 media option. This was implemented in the generic support that way in
410 order to allow flow control to be switched on and off via ifconfig(8)
411 with the PHY specific default to typically off in order to protect
412 from unwanted effects. Consequently, if you used flow control with
413 one of the above mentioned drivers you now need to explicitly enable
415 ifconfig bge0 media auto mediaopt flowcontrol
417 Along with the above mentioned changes generic support for setting
418 1000baseT master mode also has been added and brgphy(4), ciphy(4),
419 e1000phy(4) as well as ip1000phy(4) have been converted to take
420 advantage of it. This means that these drivers now no longer take the
421 link0 parameter for selecting master mode but the master media option
422 has to be used instead, for example like in the following:
423 ifconfig bge0 media 1000baseT mediaopt full-duplex,master
425 Selection of master mode now is also available with all other PHY
426 drivers supporting 1000baseT.
429 The TCP stack has received a significant update to add support for
430 modularised congestion control and generally improve the clarity of
431 congestion control decisions. Bump __FreeBSD_version to 900025. User
432 space tools that rely on the size of struct tcpcb in tcp_var.h (e.g.
433 sockstat) need to be recompiled.
436 The man(1) utility has been replaced by a new version that no longer
437 uses /etc/manpath.config. Please consult man.conf(5) for how to
438 migrate local entries to the new format.
441 The copyright strings printed by login(1) and sshd(8) at the time of a
442 new connection have been removed to follow other operating systems and
446 A workaround for a fixed ld bug has been removed in kernel code,
447 so make sure that your system ld is built from sources after
448 revision 210245 from 2010-07-19 (r211583 if building head kernel
449 on stable/8, r211584 for stable/7; both from 2010-08-21).
450 A symptom of incorrect ld version is different addresses for
451 set_pcpu section and __start_set_pcpu symbol in kernel and/or modules.
454 The $ipv6_prefer variable in rc.conf(5) has been split into
455 $ip6addrctl_policy and $ipv6_activate_all_interfaces.
457 The $ip6addrctl_policy is a variable to choose a pre-defined
458 address selection policy set by ip6addrctl(8). A value
459 "ipv4_prefer", "ipv6_prefer" or "AUTO" can be specified. The
462 The $ipv6_activate_all_interfaces specifies whether IFDISABLED
463 flag (see an entry of 20090926) is set on an interface with no
464 corresponding $ifconfig_IF_ipv6 line. The default is "NO" for
465 security reason. If you want IPv6 link-local address on all
466 interfaces by default, set this to "YES".
468 The old ipv6_prefer="YES" is equivalent to
469 ipv6_activate_all_interfaces="YES" and
470 ip6addrctl_policy="ipv6_prefer".
473 DTrace has grown support for userland tracing. Due to this, DTrace is
474 now i386 and amd64 only.
475 dtruss(1) is now installed by default on those systems and a new
476 kernel module is needed for userland tracing: fasttrap.
477 No changes to your kernel config file are necessary to enable
478 userland tracing, but you might consider adding 'STRIP=' and
479 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want
480 to have informative userland stack traces in DTrace (ustack).
483 The acpi_aiboost(4) driver has been removed in favor of the new
484 aibs(4) driver. You should update your kernel configuration file.
487 BSD grep has been imported to the base system and it is built by
488 default. It is completely BSD licensed, highly GNU-compatible, uses
489 less memory than its GNU counterpart and has a small codebase.
490 However, it is slower than its GNU counterpart, which is mostly
491 noticeable for larger searches, for smaller ones it is measurable
492 but not significant. The reason is complex, the most important factor
493 is that we lack a modern and efficient regex library and GNU
494 overcomes this by optimizing the searches internally. Future work
495 on improving the regex performance is planned, for the meantime,
496 users that need better performance, can build GNU grep instead by
497 setting the WITH_GNU_GREP knob.
500 Due to the import of powerpc64 support, all existing powerpc kernel
501 configuration files must be updated with a machine directive like this:
502 machine powerpc powerpc
504 In addition, an updated config(8) is required to build powerpc kernels
508 A new version of ZFS (version 15) has been merged to -HEAD.
509 This version uses a python library for the following subcommands:
510 zfs allow, zfs unallow, zfs groupspace, zfs userspace.
511 For full functionality of these commands the following port must
512 be installed: sysutils/py-zfs
515 'vm_page's are now hashed by physical address to an array of mutexes.
516 Currently this is only used to serialize access to hold_count. Over
517 time the page queue mutex will be peeled away. This changes the size
518 of pmap on every architecture. And requires all callers of vm_page_hold
519 and vm_page_unhold to be updated.
522 WITH_CTF can now be specified in src.conf (not recommended, there
523 are some problems with static executables), make.conf (would also
524 affect ports which do not use GNU make and do not override the
525 compile targets) or in the kernel config (via "makeoptions
527 When WITH_CTF was specified there before this was silently ignored,
528 so make sure that WITH_CTF is not used in places which could lead
529 to unwanted behavior.
532 The kernel option COMPAT_IA32 has been replaced with COMPAT_FREEBSD32
533 to allow 32-bit compatibility on non-x86 platforms. All kernel
534 configurations on amd64 and ia64 platforms using these options must
535 be modified accordingly.
538 The utmp user accounting database has been replaced with utmpx,
539 the user accounting interface standardized by POSIX.
540 Unfortunately the semantics of utmp and utmpx don't match,
541 making it practically impossible to support both interfaces.
542 The user accounting database is used by tools like finger(1),
543 last(1), talk(1), w(1) and ac(8).
545 All applications in the base system use utmpx. This means only
546 local binaries (e.g. from the ports tree) may still use these
547 utmp database files. These applications must be rebuilt to make
550 After the system has been upgraded, it is safe to remove the old
551 log files (/var/run/utmp, /var/log/lastlog and /var/log/wtmp*),
552 assuming their contents is of no importance anymore. Old wtmp
553 databases can only be used by last(1) and ac(8) after they have
554 been converted to the new format using wtmpcvt(1).
557 Introduce the kernel thread "deadlock resolver" (which can be enabled
558 via the DEADLKRES option, see NOTES for more details) and the
559 sleepq_type() function for sleepqueues.
562 The rc.firewall and rc.firewall6 were unified, and
563 rc.firewall6 and rc.d/ip6fw were removed.
564 According to the removal of rc.d/ip6fw, ipv6_firewall_* rc
565 variables are obsoleted. Instead, the following new rc
566 variables are added to rc.d/ipfw:
568 firewall_client_net_ipv6, firewall_simple_iif_ipv6,
569 firewall_simple_inet_ipv6, firewall_simple_oif_ipv6,
570 firewall_simple_onet_ipv6, firewall_trusted_ipv6
572 The meanings correspond to the relevant IPv4 variables.
578 The default terminal emulation for syscons(4) has been changed
579 from cons25 to xterm on all platforms except pc98. This means
580 that the /etc/ttys file needs to be updated to ensure correct
581 operation of applications on the console.
583 The terminal emulation style can be toggled per window by using
584 vidcontrol(1)'s -T flag. The TEKEN_CONS25 kernel configuration
585 options can be used to change the compile-time default back to
588 To prevent graphical artifacts, make sure the TERM environment
589 variable is set to match the terminal emulation that is being
590 performed by syscons(4).
593 The layout of the structure ieee80211req_scan_result has changed.
594 Applications that require wireless scan results (e.g. ifconfig(8))
595 from net80211 need to be recompiled.
597 Applications such as wpa_supplicant(8) may require a full world
598 build without using NO_CLEAN in order to get synchronized with the
602 The iwn(4) driver has been updated to support the 5000 and 5150 series.
603 There's one kernel module for each firmware. Adding "device iwnfw"
604 to the kernel configuration file means including all three firmware
605 images inside the kernel. If you want to include just the one for
606 your wireless card, use the devices iwn4965fw, iwn5000fw or
610 The rc.d/network_ipv6, IPv6 configuration script has been integrated
611 into rc.d/netif. The changes are the following:
613 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF
614 for IPv4. For aliases, $ifconfig_IF_aliasN should be used.
615 Note that both variables need the "inet6" keyword at the head.
617 Do not set $ipv6_network_interfaces manually if you do not
618 understand what you are doing. It is not needed in most cases.
620 $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but
623 2. $ipv6_enable is obsolete. Use $ipv6_prefer and
624 "inet6 accept_rtadv" keyword in ifconfig(8) instead.
626 If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and
627 all configured interfaces have "inet6 accept_rtadv" in the
628 $ifconfig_IF_ipv6. These are for backward compatibility.
630 3. A new variable $ipv6_prefer has been added. If NO, IPv6
631 functionality of interfaces with no corresponding
632 $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag,
633 and the default address selection policy of ip6addrctl(8)
634 is the IPv4-preferred one (see rc.d/ip6addrctl for more details).
635 Note that if you want to configure IPv6 functionality on the
636 disabled interfaces after boot, first you need to clear the flag by
637 using ifconfig(8) like:
639 ifconfig em0 inet6 -ifdisabled
641 If YES, the default address selection policy is set as
644 The default value of $ipv6_prefer is NO.
646 4. If your system need to receive Router Advertisement messages,
647 define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8)
648 scripts automatically invoke rtsol(8) when the interface becomes
649 UP. The Router Advertisement messages are used for SLAAC
650 (State-Less Address AutoConfiguration).
653 802.11s D3.03 support was committed. This is incompatible with the
654 previous code, which was based on D3.0.
657 A sysctl variable net.inet6.ip6.accept_rtadv now sets the default value
658 of a per-interface flag ND6_IFF_ACCEPT_RTADV, not a global knob to
659 control whether accepting Router Advertisement messages or not.
660 Also, a per-interface flag ND6_IFF_AUTO_LINKLOCAL has been added and
661 a sysctl variable net.inet6.ip6.auto_linklocal is its default value.
662 The ifconfig(8) utility now supports these flags.
665 ZFS snapshots are now mounted with MNT_IGNORE flag. Use -v option for
666 mount(8) and -a option for df(1) to see them.
669 The old tunable hw.bus.devctl_disable has been superseded by
670 hw.bus.devctl_queue. hw.bus.devctl_disable=1 in loader.conf should be
671 replaced by hw.bus.devctl_queue=0. The default for this new tunable
675 Remove the option STOP_NMI. The default action is now to use NMI only
676 for KDB via the newly introduced function stop_cpus_hard() and
677 maintain stop_cpus() to just use a normal IPI_STOP on ia32 and amd64.
680 The stable/8 branch created in subversion. This corresponds to the
681 RELENG_8 branch in CVS.
684 Bump the shared library version numbers for all libraries that do not
685 use symbol versioning as part of the 8.0-RELEASE cycle. Bump
686 __FreeBSD_version to 800105.
689 Due to changes in the implementation of virtual network stack support,
690 all network-related kernel modules must be recompiled. As this change
691 breaks the ABI, bump __FreeBSD_version to 800104.
694 The TOE interface to the TCP syncache has been modified to remove
695 struct tcpopt (<netinet/tcp_var.h>) from the ABI of the network stack.
696 The cxgb driver is the only TOE consumer affected by this change, and
697 needs to be recompiled along with the kernel. As this change breaks
698 the ABI, bump __FreeBSD_version to 800103.
701 Padding has been added to struct tcpcb, sackhint and tcpstat in
702 <netinet/tcp_var.h> to facilitate future MFCs and bug fixes whilst
703 maintaining the ABI. However, this change breaks the ABI, so bump
704 __FreeBSD_version to 800102. User space tools that rely on the size of
705 any of these structs (e.g. sockstat) need to be recompiled.
708 The NFS_LEGACYRPC option has been removed along with the old kernel
709 RPC implementation that this option selected. Kernel configurations
710 may need to be adjusted.
713 The network interface device nodes at /dev/net/<interface> have been
714 removed. All ioctl operations can be performed the normal way using
715 routing sockets. The kqueue functionality can generally be replaced
716 with routing sockets.
719 The documentation from the FreeBSD Documentation Project (Handbook,
720 FAQ, etc.) is now installed via packages by sysinstall(8) and under
721 the /usr/local/share/doc/freebsd directory instead of /usr/share/doc.
724 The ABI of various structures related to the SYSV IPC API have been
725 changed. As a result, the COMPAT_FREEBSD[456] and COMPAT_43 kernel
726 options now all require COMPAT_FREEBSD7. Bump __FreeBSD_version to
730 Layout of struct vnet has changed as routing related variables were
731 moved to their own Vimage module. Modules need to be recompiled. Bump
732 __FreeBSD_version to 800099.
735 NGROUPS_MAX and NGROUPS have been increased from 16 to 1023 and 1024
736 respectively. As long as no more than 16 groups per process are used,
737 no changes should be visible. When more than 16 groups are used, old
738 binaries may fail if they call getgroups() or getgrouplist() with
739 statically sized storage. Recompiling will work around this, but
740 applications should be modified to use dynamically allocated storage
741 for group arrays as POSIX.1-2008 does not cap an implementation's
742 number of supported groups at NGROUPS_MAX+1 as previous versions did.
744 NFS and portalfs mounts may also be affected as the list of groups is
745 truncated to 16. Users of NFS who use more than 16 groups, should
746 take care that negative group permissions are not used on the exported
747 file systems as they will not be reliable unless a GSSAPI based
748 authentication method is used.
751 The compiling option ADAPTIVE_LOCKMGRS has been introduced. This
752 option compiles in the support for adaptive spinning for lockmgrs
753 which want to enable it. The lockinit() function now accepts the flag
754 LK_ADAPTIVE in order to make the lock object subject to adaptive
755 spinning when both held in write and read mode.
758 The layout of the structure returned by IEEE80211_IOC_STA_INFO has
759 changed. User applications that use this ioctl need to be rebuilt.
762 The layout of struct thread has changed. Kernel and modules need to
766 The layout of structs ifnet, domain, protosw and vnet_net has changed.
767 Kernel modules need to be rebuilt. Bump __FreeBSD_version to 800097.
770 window(1) has been removed from the base system. It can now be
771 installed from ports. The port is called misc/window.
774 The way we are storing and accessing `routing table' entries has
775 changed. Programs reading the FIB, like netstat, need to be
779 A new netisr implementation has been added for FreeBSD 8. Network
780 file system modules, such as igmp, ipdivert, and others, should be
782 Bump __FreeBSD_version to 800096.
785 Remove the tunable/sysctl debug.mpsafevfs as its initial purpose is no
789 Add VOP_ACCESSX(9). File system modules need to be rebuilt.
790 Bump __FreeBSD_version to 800094.
793 Add mnt_xflag field to 'struct mount'. File system modules need to be
795 Bump __FreeBSD_version to 800093.
798 The compiling option ADAPTIVE_SX has been retired while it has been
799 introduced the option NO_ADAPTIVE_SX which handles the reversed logic.
800 The KPI for sx_init_flags() changes as accepting flags:
801 SX_ADAPTIVESPIN flag has been retired while the SX_NOADAPTIVE flag has
802 been introduced in order to handle the reversed logic.
803 Bump __FreeBSD_version to 800092.
806 Add support for hierarchical jails. Remove global securelevel.
807 Bump __FreeBSD_version to 800091.
810 The layout of struct vnet_net has changed, therefore modules
812 Bump __FreeBSD_version to 800090.
815 The newly imported zic(8) produces a new format in the output. Please
816 run tzsetup(8) to install the newly created data to /etc/localtime.
819 The sysctl tree for the usb stack has renamed from hw.usb2.* to
820 hw.usb.* and is now consistent again with previous releases.
823 802.11 monitor mode support was revised and driver api's were changed.
824 Drivers dependent on net80211 now support DLT_IEEE802_11_RADIO instead
825 of DLT_IEEE802_11. No user-visible data structures were changed but
826 applications that use DLT_IEEE802_11 may require changes.
827 Bump __FreeBSD_version to 800088.
830 The layout of the following structs has changed: sysctl_oid,
831 socket, ifnet, inpcbinfo, tcpcb, syncache_head, vnet_inet,
832 vnet_inet6 and vnet_ipfw. Most modules need to be rebuild or
833 panics may be experienced. World rebuild is required for
834 correctly checking networking state from userland.
835 Bump __FreeBSD_version to 800085.
838 MLDv2 and Source-Specific Multicast (SSM) have been merged
839 to the IPv6 stack. VIMAGE hooks are in but not yet used.
840 The implementation of SSM within FreeBSD's IPv6 stack closely
841 follows the IPv4 implementation.
843 For kernel developers:
845 * The most important changes are that the ip6_output() and
846 ip6_input() paths no longer take the IN6_MULTI_LOCK,
847 and this lock has been downgraded to a non-recursive mutex.
849 * As with the changes to the IPv4 stack to support SSM, filtering
850 of inbound multicast traffic must now be performed by transport
851 protocols within the IPv6 stack. This does not apply to TCP and
852 SCTP, however, it does apply to UDP in IPv6 and raw IPv6.
854 * The KPIs used by IPv6 multicast are similar to those used by
855 the IPv4 stack, with the following differences:
856 * im6o_mc_filter() is analogous to imo_multicast_filter().
857 * The legacy KAME entry points in6_joingroup and in6_leavegroup()
858 are shimmed to in6_mc_join() and in6_mc_leave() respectively.
859 * IN6_LOOKUP_MULTI() has been deprecated and removed.
860 * IPv6 relies on MLD for the DAD mechanism. KAME's internal KPIs
861 for MLDv1 have an additional 'timer' argument which is used to
862 jitter the initial membership report for the solicited-node
863 multicast membership on-link.
864 * This is not strictly needed for MLDv2, which already jitters
865 its report transmissions. However, the 'timer' argument is
866 preserved in case MLDv1 is active on the interface.
868 * The KAME linked-list based IPv6 membership implementation has
869 been refactored to use a vector similar to that used by the IPv4
871 Code which maintains a list of its own multicast memberships
872 internally, e.g. carp, has been updated to reflect the new
875 * There is a known Lock Order Reversal (LOR) due to in6_setscope()
876 acquiring the IF_AFDATA_LOCK and being called within ip6_output().
877 Whilst MLDv2 tries to avoid this otherwise benign LOR, it is an
878 implementation constraint which needs to be addressed in HEAD.
880 For application developers:
882 * The changes are broadly similar to those made for the IPv4
885 * The use of IPv4 and IPv6 multicast socket options on the same
886 socket, using mapped addresses, HAS NOT been tested or supported.
888 * There are a number of issues with the implementation of various
889 IPv6 multicast APIs which need to be resolved in the API surface
890 before the implementation is fully compatible with KAME userland
891 use, and these are mostly to do with interface index treatment.
893 * The literature available discusses the use of either the delta / ASM
894 API with setsockopt(2)/getsockopt(2), or the full-state / ASM API
895 using setsourcefilter(3)/getsourcefilter(3). For more information
896 please refer to RFC 3768, 'Socket Interface Extensions for
897 Multicast Source Filters'.
899 * Applications which use the published RFC 3678 APIs should be fine.
901 For systems administrators:
903 * The mtest(8) utility has been refactored to support IPv6, in
904 addition to IPv4. Interface addresses are no longer accepted
905 as arguments, their names must be used instead. The utility
906 will map the interface name to its first IPv4 address as
907 returned by getifaddrs(3).
909 * The ifmcstat(8) utility has also been updated to print the MLDv2
910 endpoint state and source filter lists via sysctl(3).
912 * The net.inet6.ip6.mcast.loop sysctl may be tuned to 0 to disable
913 loopback of IPv6 multicast datagrams by default; it defaults to 1
914 to preserve the existing behaviour. Disabling multicast loopback is
915 recommended for optimal system performance.
917 * The IPv6 MROUTING code has been changed to examine this sysctl
918 instead of attempting to perform a group lookup before looping
919 back forwarded datagrams.
921 Bump __FreeBSD_version to 800084.
924 Implement low-level Bluetooth HCI API.
925 Bump __FreeBSD_version to 800083.
928 The layout of struct malloc_type, used by modules to register new
929 memory allocation types, has changed. Most modules will need to
930 be rebuilt or panics may be experienced.
931 Bump __FreeBSD_version to 800081.
934 Anticipate overflowing inp_flags - add inp_flags2.
935 This changes most offsets in inpcb, so checking v4 connection
936 state will require a world rebuild.
937 Bump __FreeBSD_version to 800080.
940 Add an llentry to struct route and struct route_in6. Modules
941 embedding a struct route will need to be recompiled.
942 Bump __FreeBSD_version to 800079.
945 The size of rt_metrics_lite and by extension rtentry has changed.
946 Networking administration apps will need to be recompiled.
947 The route command now supports show as an alias for get, weighting
948 of routes, sticky and nostick flags to alter the behavior of stateful
950 Bump __FreeBSD_version to 800078.
953 Do not use Giant for kbdmux(4) locking. This is wrong and
954 apparently causing more problems than it solves. This will
955 re-open the issue where interrupt handlers may race with
956 kbdmux(4) in polling mode. Typical symptoms include (but
957 not limited to) duplicated and/or missing characters when
958 low level console functions (such as gets) are used while
959 interrupts are enabled (for example geli password prompt,
960 mountroot prompt etc.). Disabling kbdmux(4) may help.
963 The size of structs vnet_net, vnet_inet and vnet_ipfw has changed;
964 kernel modules referencing any of the above need to be recompiled.
965 Bump __FreeBSD_version to 800075.
968 GEOM_PART has become the default partition slicer for storage devices,
969 replacing GEOM_MBR, GEOM_BSD, GEOM_PC98 and GEOM_GPT slicers. It
970 introduces some changes:
972 MSDOS/EBR: the devices created from MSDOS extended partition entries
973 (EBR) can be named differently than with GEOM_MBR and are now symlinks
974 to devices with offset-based names. fstabs may need to be modified.
976 BSD: the "geometry does not match label" warning is harmless in most
977 cases but it points to problems in file system misalignment with
978 disk geometry. The "c" partition is now implicit, covers the whole
979 top-level drive and cannot be (mis)used by users.
981 General: Kernel dumps are now not allowed to be written to devices
982 whose partition types indicate they are meant to be used for file
983 systems (or, in case of MSDOS partitions, as something else than
986 Most of these changes date approximately from 200812.
989 The uscanner(4) driver has been removed from the kernel. This follows
990 Linux removing theirs in 2.6 and making libusb the default interface
994 The multicast forwarding code has been cleaned up. netstat(1)
995 only relies on KVM now for printing bandwidth upcall meters.
996 The IPv4 and IPv6 modules are split into ip_mroute_mod and
997 ip6_mroute_mod respectively. The config(5) options for statically
998 compiling this code remain the same, i.e. 'options MROUTING'.
1001 Support for the IFF_NEEDSGIANT network interface flag has been
1002 removed, which means that non-MPSAFE network device drivers are no
1003 longer supported. In particular, if_ar, if_sr, and network device
1004 drivers from the old (legacy) USB stack can no longer be built or
1008 POSIX.1 Native Language Support (NLS) has been enabled in libc and
1009 a bunch of new language catalog files have also been added.
1010 This means that some common libc messages are now localized and
1011 they depend on the LC_MESSAGES environmental variable.
1014 The k8temp(4) driver has been renamed to amdtemp(4) since
1015 support for Family 10 and Family 11 CPU families was added.
1018 IGMPv3 and Source-Specific Multicast (SSM) have been merged
1019 to the IPv4 stack. VIMAGE hooks are in but not yet used.
1021 For kernel developers, the most important changes are that the
1022 ip_output() and ip_input() paths no longer take the IN_MULTI_LOCK(),
1023 and this lock has been downgraded to a non-recursive mutex.
1025 Transport protocols (UDP, Raw IP) are now responsible for filtering
1026 inbound multicast traffic according to group membership and source
1027 filters. The imo_multicast_filter() KPI exists for this purpose.
1028 Transports which do not use multicast (SCTP, TCP) already reject
1029 multicast by default. Forwarding and receive performance may improve
1030 as a mutex acquisition is no longer needed in the ip_input()
1031 low-level input path. in_addmulti() and in_delmulti() are shimmed
1032 to new KPIs which exist to support SSM in-kernel.
1034 For application developers, it is recommended that loopback of
1035 multicast datagrams be disabled for best performance, as this
1036 will still cause the lock to be taken for each looped-back
1037 datagram transmission. The net.inet.ip.mcast.loop sysctl may
1038 be tuned to 0 to disable loopback by default; it defaults to 1
1039 to preserve the existing behaviour.
1041 For systems administrators, to obtain best performance with
1042 multicast reception and multiple groups, it is always recommended
1043 that a card with a suitably precise hash filter is used. Hash
1044 collisions will still result in the lock being taken within the
1045 transport protocol input path to check group membership.
1047 If deploying FreeBSD in an environment with IGMP snooping switches,
1048 it is recommended that the net.inet.igmp.sendlocal sysctl remain
1049 enabled; this forces 224.0.0.0/24 group membership to be announced
1052 The size of 'struct igmpstat' has changed; netstat needs to be
1053 recompiled to reflect this.
1054 Bump __FreeBSD_version to 800070.
1057 libusb20.so.1 is now installed as libusb.so.1 and the ports system
1058 updated to use it. This requires a buildworld/installworld in order to
1059 update the library and dependencies (usbconfig, etc). Its advisable to
1060 rebuild all ports which uses libusb. More specific directions are given
1061 in the ports collection UPDATING file. Any /etc/libmap.conf entries for
1062 libusb are no longer required and can be removed.
1065 A workaround is committed to allow the creation of System V shared
1066 memory segment of size > 2 GB on the 64-bit architectures.
1067 Due to a limitation of the existing ABI, the shm_segsz member
1068 of the struct shmid_ds, returned by shmctl(IPC_STAT) call is
1069 wrong for large segments. Note that limits must be explicitly
1070 raised to allow such segments to be created.
1073 The layout of struct ifnet has changed, requiring a rebuild of all
1074 network device driver modules.
1077 The /dev handling for the new USB stack has changed, a
1078 buildworld/installworld is required for libusb20.
1081 The new USB2 stack has now been permanently moved in and all kernel and
1082 module names reverted to their previous values (eg, usb, ehci, ohci,
1083 ums, ...). The old usb stack can be compiled in by prefixing the name
1084 with the letter 'o', the old usb modules have been removed.
1085 Updating entry 20090216 for xorg and 20090215 for libmap may still
1089 The rc.conf(5) option if_up_delay has been renamed to
1090 defaultroute_delay to better reflect its purpose. If you have
1091 customized this setting in /etc/rc.conf you need to update it to
1095 xorg 7.4 wants to configure its input devices via hald which does not
1096 yet work with USB2. If the keyboard/mouse does not work in xorg then
1098 Option "AllowEmptyInput" "off"
1099 to your ServerLayout section. This will cause X to use the configured
1100 kbd and mouse sections from your xorg.conf.
1103 The GENERIC kernels for all architectures now default to the new USB2
1104 stack. No kernel config options or code have been removed so if a
1105 problem arises please report it and optionally revert to the old USB
1106 stack. If you are loading USB kernel modules or have a custom kernel
1107 that includes GENERIC then ensure that usb names are also changed over,
1108 eg uftdi -> usb2_serial_ftdi.
1110 Older programs linked against the ports libusb 0.1 need to be
1111 redirected to the new stack's libusb20. /etc/libmap.conf can
1113 # Map old usb library to new one for usb2 stack
1114 libusb-0.1.so.8 libusb20.so.1
1117 All USB ethernet devices now attach as interfaces under the name ueN
1118 (eg. ue0). This is to provide a predictable name as vendors often
1119 change usb chipsets in a product without notice.
1122 The ichsmb(4) driver has been changed to require SMBus slave
1123 addresses be left-justified (xxxxxxx0b) rather than right-justified.
1124 All of the other SMBus controller drivers require left-justified
1125 slave addresses, so this change makes all the drivers provide the
1129 INET6 statistics (struct ip6stat) was updated.
1130 netstat(1) needs to be recompiled.
1133 NTFS has been removed from GENERIC kernel on amd64 to match
1134 GENERIC on i386. Should not cause any issues since mount_ntfs(8)
1135 will load ntfs.ko module automatically when NTFS support is
1136 actually needed, unless ntfs.ko is not installed or security
1137 level prohibits loading kernel modules. If either is the case,
1138 "options NTFS" has to be added into kernel config.
1141 TCP Appropriate Byte Counting (RFC 3465) support added to kernel.
1142 New field in struct tcpcb breaks ABI, so bump __FreeBSD_version to
1143 800061. User space tools that rely on the size of struct tcpcb in
1144 tcp_var.h (e.g. sockstat) need to be recompiled.
1147 ng_tty(4) module updated to match the new TTY subsystem.
1148 Due to API change, user-level applications must be updated.
1149 New API support added to mpd5 CVS and expected to be present
1150 in next mpd5.3 release.
1153 With __FreeBSD_version 800060 the makefs tool is part of
1154 the base system (it was a port).
1157 The afdata and ifnet locks have been changed from mutexes to
1158 rwlocks, network modules will need to be re-compiled.
1161 __FreeBSD_version 800059 incorporates the new arp-v2 rewrite.
1162 RTF_CLONING, RTF_LLINFO and RTF_WASCLONED flags are eliminated.
1163 The new code reduced struct rtentry{} by 16 bytes on 32-bit
1164 architecture and 40 bytes on 64-bit architecture. The userland
1165 applications "arp" and "ndp" have been updated accordingly.
1166 The output from "netstat -r" shows only routing entries and
1167 none of the L2 information.
1170 __FreeBSD_version 800057 marks the switchover from the
1171 binary ath hal to source code. Users must add the line:
1173 options AH_SUPPORT_AR5416
1175 to their kernel config files when specifying:
1179 The ath_hal module no longer exists; the code is now compiled
1180 together with the driver in the ath module. It is now
1181 possible to tailor chip support (i.e. reduce the set of chips
1182 and thereby the code size); consult ath_hal(4) for details.
1185 __FreeBSD_version 800054 adds memory barriers to
1186 <machine/atomic.h>, new interfaces to ifnet to facilitate
1187 multiple hardware transmit queues for cards that support
1188 them, and a lock-less ring-buffer implementation to
1189 enable drivers to more efficiently manage queueing of
1193 A new version of ZFS (version 13) has been merged to -HEAD.
1194 This version has zpool attribute "listsnapshots" off by
1195 default, which means "zfs list" does not show snapshots,
1196 and is the same as Solaris behavior.
1199 dummynet(4) ABI has changed. ipfw(8) needs to be recompiled.
1202 The uhci, ohci, ehci and slhci USB Host controller drivers have
1203 been put into separate modules. If you load the usb module
1204 separately through loader.conf you will need to load the
1205 appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
1206 controller add the following to loader.conf:
1212 The ABI used by the PMC toolset has changed. Please keep
1213 userland (libpmc(3)) and the kernel module (hwpmc(4)) in
1217 atapci kernel module now includes only generic PCI ATA
1218 driver. AHCI driver moved to ataahci kernel module.
1219 All vendor-specific code moved into separate kernel modules:
1220 ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek,
1221 atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron,
1222 atamarvell, atamicron, atanational, atanetcell, atanvidia,
1223 atapromise, ataserverworks, atasiliconimage, atasis, atavia
1226 The TTY subsystem of the kernel has been replaced by a new
1227 implementation, which provides better scalability and an
1228 improved driver model. Most common drivers have been migrated to
1229 the new TTY subsystem, while others have not. The following
1230 drivers have not yet been ported to the new TTY layer:
1233 cy, digi, rc, rp, sio
1239 ng_h4, ng_tty, ppp, sl, snp
1241 Adding these drivers to your kernel configuration file shall
1242 cause compilation to fail.
1245 ntpd has been upgraded to 4.2.4p5.
1248 OpenSSH has been upgraded to 5.1p1.
1250 For many years, FreeBSD's version of OpenSSH preferred DSA
1251 over RSA for host and user authentication keys. With this
1252 upgrade, we've switched to the vendor's default of RSA over
1253 DSA. This may cause upgraded clients to warn about unknown
1254 host keys even for previously known hosts. Users should
1255 follow the usual procedure for verifying host keys before
1256 accepting the RSA key.
1258 This can be circumvented by setting the "HostKeyAlgorithms"
1259 option to "ssh-dss,ssh-rsa" in ~/.ssh/config or on the ssh
1262 Please note that the sequence of keys offered for
1263 authentication has been changed as well. You may want to
1264 specify IdentityFile in a different order to revert this
1268 The sio(4) driver has been removed from the i386 and amd64
1269 kernel configuration files. This means uart(4) is now the
1270 default serial port driver on those platforms as well.
1272 To prevent collisions with the sio(4) driver, the uart(4) driver
1273 uses different names for its device nodes. This means the
1274 onboard serial port will now most likely be called "ttyu0"
1275 instead of "ttyd0". You may need to reconfigure applications to
1276 use the new device names.
1278 When using the serial port as a boot console, be sure to update
1279 /boot/device.hints and /etc/ttys before booting the new kernel.
1280 If you forget to do so, you can still manually specify the hints
1281 at the loader prompt:
1283 set hint.uart.0.at="isa"
1284 set hint.uart.0.port="0x3F8"
1285 set hint.uart.0.flags="0x10"
1286 set hint.uart.0.irq="4"
1290 The gpt(8) utility has been removed. Use gpart(8) to partition
1294 The version that Linuxulator emulates was changed from 2.4.2
1295 to 2.6.16. If you experience any problems with Linux binaries
1296 please try to set sysctl compat.linux.osrelease to 2.4.2 and
1297 if it fixes the problem contact emulation mailing list.
1300 ISDN4BSD (I4B) was removed from the src tree. You may need to
1301 update a your kernel configuration and remove relevant entries.
1304 I have checked in code to support multiple routing tables.
1305 See the man pages setfib(1) and setfib(2).
1306 This is a hopefully backwards compatible version,
1307 but to make use of it you need to compile your kernel
1308 with options ROUTETABLES=2 (or more up to 16).
1311 The 802.11 wireless support was redone to enable multi-bss
1312 operation on devices that are capable. The underlying device
1313 is no longer used directly but instead wlanX devices are
1314 cloned with ifconfig. This requires changes to rc.conf files.
1315 For example, change:
1316 ifconfig_ath0="WPA DHCP"
1319 ifconfig_wlan0="WPA DHCP"
1320 see rc.conf(5) for more details. In addition, mergemaster of
1321 /etc/rc.d is highly recommended. Simultaneous update of userland
1322 and kernel wouldn't hurt either.
1324 As part of the multi-bss changes the wlan_scan_ap and wlan_scan_sta
1325 modules were merged into the base wlan module. All references
1326 to these modules (e.g. in kernel config files) must be removed.
1329 psm(4) has gained write(2) support in native operation level.
1330 Arbitrary commands can be written to /dev/psm%d and status can
1331 be read back from it. Therefore, an application is responsible
1332 for status validation and error recovery. It is a no-op in
1333 other operation levels.
1336 Support for KSE threading has been removed from the kernel. To
1337 run legacy applications linked against KSE libmap.conf may
1338 be used. The following libmap.conf may be used to ensure
1339 compatibility with any prior release:
1341 libpthread.so.1 libthr.so.1
1342 libpthread.so.2 libthr.so.2
1343 libkse.so.3 libthr.so.3
1346 The layout of struct vmspace has changed. This affects libkvm
1347 and any executables that link against libkvm and use the
1348 kvm_getprocs() function. In particular, but not exclusively,
1349 it affects ps(1), fstat(1), pkill(1), systat(1), top(1) and w(1).
1350 The effects are minimal, but it's advisable to upgrade world
1354 The latest em driver no longer has support in it for the
1355 82575 adapter, this is now moved to the igb driver. The
1356 split was done to make new features that are incompatible
1357 with older hardware easier to do.
1360 The new geom_lvm(4) geom class has been renamed to geom_linux_lvm(4),
1361 likewise the kernel option is now GEOM_LINUX_LVM.
1364 The default NFS mount mode has changed from UDP to TCP for
1365 increased reliability. If you rely on (insecurely) NFS
1366 mounting across a firewall you may need to update your
1370 Belatedly note the addition of m_collapse for compacting
1374 The fts(3) structures have been changed to use adequate
1375 integer types for their members and so to be able to cope
1376 with huge file trees. The old fts(3) ABI is preserved
1377 through symbol versioning in libc, so third-party binaries
1378 using fts(3) should still work, although they will not take
1379 advantage of the extended types. At the same time, some
1380 third-party software might fail to build after this change
1381 due to unportable assumptions made in its source code about
1382 fts(3) structure members. Such software should be fixed
1383 by its vendor or, in the worst case, in the ports tree.
1384 FreeBSD_version 800015 marks this change for the unlikely
1385 case that a portable fix is impossible.
1388 To upgrade to -current after this date, you must be running
1389 FreeBSD not older than 6.0-RELEASE. Upgrading to -current
1390 from 5.x now requires a stop over at RELENG_6 or RELENG_7 systems.
1393 The ADAPTIVE_GIANT kernel option has been retired because its
1394 functionality is the default now.
1397 The AT keyboard emulation of sunkbd(4) has been turned on
1398 by default. In order to make the special symbols of the Sun
1399 keyboards driven by sunkbd(4) work under X these now have
1400 to be configured the same way as Sun USB keyboards driven
1401 by ukbd(4) (which also does AT keyboard emulation), f.e.:
1403 Option "XkbLayout" "us"
1404 Option "XkbRules" "xorg"
1405 Option "XkbSymbols" "pc(pc105)+sun_vndr/usb(sun_usb)+us"
1408 It has been decided that it is desirable to provide ABI
1409 backwards compatibility to the FreeBSD 4/5/6 versions of the
1410 PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
1411 broken with the introduction of PCI domain support (see the
1412 20070930 entry). Unfortunately, this required the ABI of
1413 PCIOCGETCONF to be broken again in order to be able to
1414 provide backwards compatibility to the old version of that
1415 IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
1416 again. As for prominent ports this affects neither pciutils
1417 nor xorg-server this time, the hal port needs to be rebuilt
1421 The misnamed kthread_create() and friends have been renamed
1422 to kproc_create() etc. Many of the callers already
1423 used kproc_start()..
1424 I will return kthread_create() and friends in a while
1425 with implementations that actually create threads, not procs.
1426 Renaming corresponds with version 800002.
1435 Avoid using make -j when upgrading. While generally safe, there are
1436 sometimes problems using -j to upgrade. If your upgrade fails with
1437 -j, please try again without -j. From time to time in the past there
1438 have been problems using -j with buildworld and/or installworld. This
1439 is especially true when upgrading between "distant" versions (eg one
1440 that cross a major release boundary or several minor releases, or when
1441 several months have passed on the -current branch).
1443 Sometimes, obscure build problems are the result of environment
1444 poisoning. This can happen because the make utility reads its
1445 environment when searching for values for global variables. To run
1446 your build attempts in an "environmental clean room", prefix all make
1447 commands with 'env -i '. See the env(1) manual page for more details.
1449 When upgrading from one major version to another it is generally best
1450 to upgrade to the latest code in the currently installed branch first,
1451 then do an upgrade to the new branch. This is the best-tested upgrade
1452 path, and has the highest probability of being successful. Please try
1453 this approach before reporting problems with a major version upgrade.
1457 When upgrading the boot ZFS pool to a new version, always follow
1460 1.) recompile and reinstall the ZFS boot loader and boot block
1461 (this is part of "make buildworld" and "make installworld")
1463 2.) update the ZFS boot block on your boot drive
1465 The following example updates the ZFS boot block on the first
1466 partition (freebsd-boot) of a GPT partitioned drive ad0:
1467 "gpart bootcode -p /boot/gptzfsboot -i 1 ad0"
1469 Non-boot pools do not need these updates.
1473 If you are updating from a prior version of FreeBSD (even one just
1474 a few days old), you should follow this procedure. It is the most
1475 failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
1477 make kernel-toolchain
1478 make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
1479 make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
1481 To test a kernel once
1482 ---------------------
1483 If you just want to boot a kernel once (because you are not sure
1484 if it works, or if you want to boot a known bad kernel to provide
1485 debugging information) run
1486 make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
1487 nextboot -k testkernel
1489 To just build a kernel when you know that it won't mess you up
1490 --------------------------------------------------------------
1491 This assumes you are already running a CURRENT system. Replace
1492 ${arch} with the architecture of your machine (e.g. "i386",
1493 "arm", "amd64", "ia64", "pc98", "sparc64", "powerpc", "mips", etc).
1495 cd src/sys/${arch}/conf
1496 config KERNEL_NAME_HERE
1497 cd ../compile/KERNEL_NAME_HERE
1502 If this fails, go to the "To build a kernel" section.
1504 To rebuild everything and install it on the current system.
1505 -----------------------------------------------------------
1506 # Note: sometimes if you are running current you gotta do more than
1507 # is listed here if you are upgrading from a really old current.
1509 <make sure you have good level 0 dumps>
1511 make kernel KERNCONF=YOUR_KERNEL_HERE
1513 <reboot in single user> [3]
1521 To cross-install current onto a separate partition
1522 --------------------------------------------------
1523 # In this approach we use a separate partition to hold
1524 # current's root, 'usr', and 'var' directories. A partition
1525 # holding "/", "/usr" and "/var" should be about 2GB in
1528 <make sure you have good level 0 dumps>
1531 make buildkernel KERNCONF=YOUR_KERNEL_HERE
1532 <maybe newfs current's root partition>
1533 <mount current's root partition on directory ${CURRENT_ROOT}>
1534 make installworld DESTDIR=${CURRENT_ROOT}
1535 make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
1536 make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
1537 cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
1538 <edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
1539 <reboot into current>
1540 <do a "native" rebuild/install as described in the previous section>
1541 <maybe install compatibility libraries from ports/misc/compat*>
1545 To upgrade in-place from 8.x-stable to current
1546 ----------------------------------------------
1547 <make sure you have good level 0 dumps>
1549 make kernel KERNCONF=YOUR_KERNEL_HERE [8]
1551 <reboot in single user> [3]
1558 Make sure that you've read the UPDATING file to understand the
1559 tweaks to various things you need. At this point in the life
1560 cycle of current, things change often and you are on your own
1561 to cope. The defaults can also change, so please read ALL of
1562 the UPDATING entries.
1564 Also, if you are tracking -current, you must be subscribed to
1565 freebsd-current@freebsd.org. Make sure that before you update
1566 your sources that you have read and understood all the recent
1567 messages there. If in doubt, please track -stable which has
1568 much fewer pitfalls.
1570 [1] If you have third party modules, such as vmware, you
1571 should disable them at this point so they don't crash your
1574 [3] From the bootblocks, boot -s, and then do
1579 adjkerntz -i # if CMOS is wall time
1580 Also, when doing a major release upgrade, it is required that
1581 you boot into single user mode to do the installworld.
1583 [4] Note: This step is non-optional. Failure to do this step
1584 can result in a significant reduction in the functionality of the
1585 system. Attempting to do it by hand is not recommended and those
1586 that pursue this avenue should read this file carefully, as well
1587 as the archives of freebsd-current and freebsd-hackers mailing lists
1588 for potential gotchas. The -U option is also useful to consider.
1589 See mergemaster(8) for more information.
1591 [5] Usually this step is a noop. However, from time to time
1592 you may need to do this if you get unknown user in the following
1593 step. It never hurts to do it all the time. You may need to
1594 install a new mergemaster (cd src/usr.sbin/mergemaster && make
1595 install) after the buildworld before this step if you last updated
1596 from current before 20020224 or from -stable before 20020408.
1598 [6] This only deletes old files and directories. Old libraries
1599 can be deleted by "make delete-old-libs", but you have to make
1600 sure that no program is using those libraries anymore.
1602 [8] In order to have a kernel that can run the 4.x binaries needed to
1603 do an installworld, you must include the COMPAT_FREEBSD4 option in
1604 your kernel. Failure to do so may leave you with a system that is
1605 hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is
1606 required to run the 5.x binaries on more recent kernels. And so on
1607 for COMPAT_FREEBSD6 and COMPAT_FREEBSD7.
1609 Make sure that you merge any new devices from GENERIC since the
1610 last time you updated your kernel config file.
1612 [9] When checking out sources, you must include the -P flag to have
1613 cvs prune empty directories.
1615 If CPUTYPE is defined in your /etc/make.conf, make sure to use the
1616 "?=" instead of the "=" assignment operator, so that buildworld can
1617 override the CPUTYPE if it needs to.
1619 MAKEOBJDIRPREFIX must be defined in an environment variable, and
1620 not on the command line, or in /etc/make.conf. buildworld will
1621 warn if it is improperly defined.
1624 This file contains a list, in reverse chronological order, of major
1625 breakages in tracking -current. It is not guaranteed to be a complete
1626 list of such breakages, and only contains entries since October 10, 2007.
1627 If you need to see UPDATING entries from before that date, you will need
1628 to fetch an UPDATING file from an older FreeBSD release.
1630 Copyright information:
1632 Copyright 1998-2009 M. Warner Losh. All Rights Reserved.
1634 Redistribution, publication, translation and use, with or without
1635 modification, in full or in part, in any form or format of this
1636 document are permitted without further permission from the author.
1638 THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
1639 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1640 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1641 DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
1642 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1643 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1644 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1645 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1646 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
1647 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1648 POSSIBILITY OF SUCH DAMAGE.
1650 Contact Warner Losh if you have any questions about your use of